Message ID | 20220208172514.3481-29-bvanassche@acm.org |
---|---|
State | Superseded |
Headers | show |
Series | Remove the SCSI pointer from struct scsi_cmnd | expand |
On 2/8/22 18:24, Bart Van Assche wrote: > Set .cmd_size in the SCSI host template instead of using the SCSI pointer > from struct scsi_cmnd. This patch prepares for removal of the SCSI pointer > from struct scsi_cmnd. > > Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> > Signed-off-by: Bart Van Assche <bvanassche@acm.org> > --- > drivers/scsi/megaraid/megaraid_sas.h | 12 ++++++++++++ > drivers/scsi/megaraid/megaraid_sas_base.c | 8 ++++---- > drivers/scsi/megaraid/megaraid_sas_fusion.c | 15 ++++++++------- > 3 files changed, 24 insertions(+), 11 deletions(-) > > diff --git a/drivers/scsi/megaraid/megaraid_sas.h b/drivers/scsi/megaraid/megaraid_sas.h > index 2c9d1b796475..611871ef15b5 100644 > --- a/drivers/scsi/megaraid/megaraid_sas.h > +++ b/drivers/scsi/megaraid/megaraid_sas.h > @@ -18,6 +18,8 @@ > #ifndef LSI_MEGARAID_SAS_H > #define LSI_MEGARAID_SAS_H > > +#include <scsi/scsi_cmnd.h> > + > /* > * MegaRAID SAS Driver meta data > */ > @@ -2594,6 +2596,16 @@ struct megasas_cmd { > }; > }; > > +struct megasas_cmd_priv { > + void *cmd_priv; > + u8 status; > +}; > + > +static inline struct megasas_cmd_priv *megasas_priv(struct scsi_cmnd *cmd) > +{ > + return scsi_cmd_priv(cmd); > +} > + > #define MAX_MGMT_ADAPTERS 1024 > #define MAX_IOCTL_SGE 16 > > diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c > index 82e1e24257bc..8bf72dbc33b7 100644 > --- a/drivers/scsi/megaraid/megaraid_sas_base.c > +++ b/drivers/scsi/megaraid/megaraid_sas_base.c > @@ -1760,7 +1760,7 @@ megasas_build_and_issue_cmd(struct megasas_instance *instance, > goto out_return_cmd; > > cmd->scmd = scmd; > - scmd->SCp.ptr = (char *)cmd; > + megasas_priv(scmd)->cmd_priv = cmd; > > /* > * Issue the command to the FW > @@ -2992,11 +2992,10 @@ megasas_dump_reg_set(void __iomem *reg_set) > void > megasas_dump_fusion_io(struct scsi_cmnd *scmd) > { > - struct megasas_cmd_fusion *cmd; > + struct megasas_cmd_fusion *cmd = megasas_priv(scmd)->cmd_priv; > union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; > struct megasas_instance *instance; > > - cmd = (struct megasas_cmd_fusion *)scmd->SCp.ptr; > instance = (struct megasas_instance *)scmd->device->host->hostdata; > > scmd_printk(KERN_INFO, scmd, > @@ -3518,6 +3517,7 @@ static struct scsi_host_template megasas_template = { > .mq_poll = megasas_blk_mq_poll, > .change_queue_depth = scsi_change_queue_depth, > .max_segment_size = 0xffffffff, > + .cmd_size = sizeof(struct megasas_cmd_priv), > }; > > /** > @@ -3601,7 +3601,7 @@ megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd, > cmd->retry_for_fw_reset = 0; > > if (cmd->scmd) > - cmd->scmd->SCp.ptr = NULL; > + megasas_priv(cmd->scmd)->cmd_priv = NULL; > > switch (hdr->cmd) { > case MFI_CMD_INVALID: > diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c b/drivers/scsi/megaraid/megaraid_sas_fusion.c > index fc90a0a687b5..c72364864bf4 100644 > --- a/drivers/scsi/megaraid/megaraid_sas_fusion.c > +++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c > @@ -2915,7 +2915,7 @@ megasas_build_ldio_fusion(struct megasas_instance *instance, > get_updated_dev_handle(instance, > &fusion->load_balance_info[device_id], > &io_info, local_map_ptr); > - scp->SCp.Status |= MEGASAS_LOAD_BALANCE_FLAG; > + megasas_priv(scp)->status |= MEGASAS_LOAD_BALANCE_FLAG; > cmd->pd_r1_lb = io_info.pd_after_lb; > if (instance->adapter_type >= VENTURA_SERIES) > rctx_g35->span_arm = io_info.span_arm; > @@ -2923,7 +2923,7 @@ megasas_build_ldio_fusion(struct megasas_instance *instance, > rctx->span_arm = io_info.span_arm; > > } else > - scp->SCp.Status &= ~MEGASAS_LOAD_BALANCE_FLAG; > + megasas_priv(scp)->status &= ~MEGASAS_LOAD_BALANCE_FLAG; > > if (instance->adapter_type >= VENTURA_SERIES) > cmd->r1_alt_dev_handle = io_info.r1_alt_dev_handle; > @@ -3293,7 +3293,7 @@ megasas_build_io_fusion(struct megasas_instance *instance, > io_request->SenseBufferLength = SCSI_SENSE_BUFFERSIZE; > > cmd->scmd = scp; > - scp->SCp.ptr = (char *)cmd; > + megasas_priv(scp)->cmd_priv = cmd; > > return 0; > } > @@ -3489,7 +3489,7 @@ megasas_complete_r1_command(struct megasas_instance *instance, > if (instance->ldio_threshold && > megasas_cmd_type(scmd_local) == READ_WRITE_LDIO) > atomic_dec(&instance->ldio_outstanding); > - scmd_local->SCp.ptr = NULL; > + megasas_priv(scmd_local)->cmd_priv = NULL; > megasas_return_cmd_fusion(instance, cmd); > scsi_dma_unmap(scmd_local); > megasas_sdev_busy_dec(instance, scmd_local); > @@ -3613,12 +3613,13 @@ complete_cmd_fusion(struct megasas_instance *instance, u32 MSIxIndex, > case MPI2_FUNCTION_SCSI_IO_REQUEST: /*Fast Path IO.*/ > /* Update load balancing info */ > if (fusion->load_balance_info && > - (cmd_fusion->scmd->SCp.Status & > + (megasas_priv(cmd_fusion->scmd)->status & > MEGASAS_LOAD_BALANCE_FLAG)) { > device_id = MEGASAS_DEV_INDEX(scmd_local); > lbinfo = &fusion->load_balance_info[device_id]; > atomic_dec(&lbinfo->scsi_pending_cmds[cmd_fusion->pd_r1_lb]); > - cmd_fusion->scmd->SCp.Status &= ~MEGASAS_LOAD_BALANCE_FLAG; > + megasas_priv(cmd_fusion->scmd)->status &= > + ~MEGASAS_LOAD_BALANCE_FLAG; > } > fallthrough; /* and complete IO */ > case MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST: /* LD-IO Path */ > @@ -3630,7 +3631,7 @@ complete_cmd_fusion(struct megasas_instance *instance, u32 MSIxIndex, > if (instance->ldio_threshold && > (megasas_cmd_type(scmd_local) == READ_WRITE_LDIO)) > atomic_dec(&instance->ldio_outstanding); > - scmd_local->SCp.ptr = NULL; > + megasas_priv(scmd_local)->cmd_priv = NULL; > megasas_return_cmd_fusion(instance, cmd_fusion); > scsi_dma_unmap(scmd_local); > megasas_sdev_busy_dec(instance, scmd_local); Reviewed-by: Hannes Reinecke <hare@suse.de> Cheers, Hannes
> On Feb 8, 2022, at 9:24 AM, Bart Van Assche <bvanassche@acm.org> wrote: > > Set .cmd_size in the SCSI host template instead of using the SCSI pointer > from struct scsi_cmnd. This patch prepares for removal of the SCSI pointer > from struct scsi_cmnd. > > Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> > Signed-off-by: Bart Van Assche <bvanassche@acm.org> > --- > drivers/scsi/megaraid/megaraid_sas.h | 12 ++++++++++++ > drivers/scsi/megaraid/megaraid_sas_base.c | 8 ++++---- > drivers/scsi/megaraid/megaraid_sas_fusion.c | 15 ++++++++------- > 3 files changed, 24 insertions(+), 11 deletions(-) > > diff --git a/drivers/scsi/megaraid/megaraid_sas.h b/drivers/scsi/megaraid/megaraid_sas.h > index 2c9d1b796475..611871ef15b5 100644 > --- a/drivers/scsi/megaraid/megaraid_sas.h > +++ b/drivers/scsi/megaraid/megaraid_sas.h > @@ -18,6 +18,8 @@ > #ifndef LSI_MEGARAID_SAS_H > #define LSI_MEGARAID_SAS_H > > +#include <scsi/scsi_cmnd.h> > + > /* > * MegaRAID SAS Driver meta data > */ > @@ -2594,6 +2596,16 @@ struct megasas_cmd { > }; > }; > > +struct megasas_cmd_priv { > + void *cmd_priv; > + u8 status; > +}; > + > +static inline struct megasas_cmd_priv *megasas_priv(struct scsi_cmnd *cmd) > +{ > + return scsi_cmd_priv(cmd); > +} > + > #define MAX_MGMT_ADAPTERS 1024 > #define MAX_IOCTL_SGE 16 > > diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c > index 82e1e24257bc..8bf72dbc33b7 100644 > --- a/drivers/scsi/megaraid/megaraid_sas_base.c > +++ b/drivers/scsi/megaraid/megaraid_sas_base.c > @@ -1760,7 +1760,7 @@ megasas_build_and_issue_cmd(struct megasas_instance *instance, > goto out_return_cmd; > > cmd->scmd = scmd; > - scmd->SCp.ptr = (char *)cmd; > + megasas_priv(scmd)->cmd_priv = cmd; > > /* > * Issue the command to the FW > @@ -2992,11 +2992,10 @@ megasas_dump_reg_set(void __iomem *reg_set) > void > megasas_dump_fusion_io(struct scsi_cmnd *scmd) > { > - struct megasas_cmd_fusion *cmd; > + struct megasas_cmd_fusion *cmd = megasas_priv(scmd)->cmd_priv; > union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; > struct megasas_instance *instance; > > - cmd = (struct megasas_cmd_fusion *)scmd->SCp.ptr; > instance = (struct megasas_instance *)scmd->device->host->hostdata; > > scmd_printk(KERN_INFO, scmd, > @@ -3518,6 +3517,7 @@ static struct scsi_host_template megasas_template = { > .mq_poll = megasas_blk_mq_poll, > .change_queue_depth = scsi_change_queue_depth, > .max_segment_size = 0xffffffff, > + .cmd_size = sizeof(struct megasas_cmd_priv), > }; > > /** > @@ -3601,7 +3601,7 @@ megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd, > cmd->retry_for_fw_reset = 0; > > if (cmd->scmd) > - cmd->scmd->SCp.ptr = NULL; > + megasas_priv(cmd->scmd)->cmd_priv = NULL; > > switch (hdr->cmd) { > case MFI_CMD_INVALID: > diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c b/drivers/scsi/megaraid/megaraid_sas_fusion.c > index fc90a0a687b5..c72364864bf4 100644 > --- a/drivers/scsi/megaraid/megaraid_sas_fusion.c > +++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c > @@ -2915,7 +2915,7 @@ megasas_build_ldio_fusion(struct megasas_instance *instance, > get_updated_dev_handle(instance, > &fusion->load_balance_info[device_id], > &io_info, local_map_ptr); > - scp->SCp.Status |= MEGASAS_LOAD_BALANCE_FLAG; > + megasas_priv(scp)->status |= MEGASAS_LOAD_BALANCE_FLAG; > cmd->pd_r1_lb = io_info.pd_after_lb; > if (instance->adapter_type >= VENTURA_SERIES) > rctx_g35->span_arm = io_info.span_arm; > @@ -2923,7 +2923,7 @@ megasas_build_ldio_fusion(struct megasas_instance *instance, > rctx->span_arm = io_info.span_arm; > > } else > - scp->SCp.Status &= ~MEGASAS_LOAD_BALANCE_FLAG; > + megasas_priv(scp)->status &= ~MEGASAS_LOAD_BALANCE_FLAG; > > if (instance->adapter_type >= VENTURA_SERIES) > cmd->r1_alt_dev_handle = io_info.r1_alt_dev_handle; > @@ -3293,7 +3293,7 @@ megasas_build_io_fusion(struct megasas_instance *instance, > io_request->SenseBufferLength = SCSI_SENSE_BUFFERSIZE; > > cmd->scmd = scp; > - scp->SCp.ptr = (char *)cmd; > + megasas_priv(scp)->cmd_priv = cmd; > > return 0; > } > @@ -3489,7 +3489,7 @@ megasas_complete_r1_command(struct megasas_instance *instance, > if (instance->ldio_threshold && > megasas_cmd_type(scmd_local) == READ_WRITE_LDIO) > atomic_dec(&instance->ldio_outstanding); > - scmd_local->SCp.ptr = NULL; > + megasas_priv(scmd_local)->cmd_priv = NULL; > megasas_return_cmd_fusion(instance, cmd); > scsi_dma_unmap(scmd_local); > megasas_sdev_busy_dec(instance, scmd_local); > @@ -3613,12 +3613,13 @@ complete_cmd_fusion(struct megasas_instance *instance, u32 MSIxIndex, > case MPI2_FUNCTION_SCSI_IO_REQUEST: /*Fast Path IO.*/ > /* Update load balancing info */ > if (fusion->load_balance_info && > - (cmd_fusion->scmd->SCp.Status & > + (megasas_priv(cmd_fusion->scmd)->status & > MEGASAS_LOAD_BALANCE_FLAG)) { > device_id = MEGASAS_DEV_INDEX(scmd_local); > lbinfo = &fusion->load_balance_info[device_id]; > atomic_dec(&lbinfo->scsi_pending_cmds[cmd_fusion->pd_r1_lb]); > - cmd_fusion->scmd->SCp.Status &= ~MEGASAS_LOAD_BALANCE_FLAG; > + megasas_priv(cmd_fusion->scmd)->status &= > + ~MEGASAS_LOAD_BALANCE_FLAG; > } > fallthrough; /* and complete IO */ > case MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST: /* LD-IO Path */ > @@ -3630,7 +3631,7 @@ complete_cmd_fusion(struct megasas_instance *instance, u32 MSIxIndex, > if (instance->ldio_threshold && > (megasas_cmd_type(scmd_local) == READ_WRITE_LDIO)) > atomic_dec(&instance->ldio_outstanding); > - scmd_local->SCp.ptr = NULL; > + megasas_priv(scmd_local)->cmd_priv = NULL; > megasas_return_cmd_fusion(instance, cmd_fusion); > scsi_dma_unmap(scmd_local); > megasas_sdev_busy_dec(instance, scmd_local); Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com> -- Himanshu Madhani Oracle Linux Engineering
diff --git a/drivers/scsi/megaraid/megaraid_sas.h b/drivers/scsi/megaraid/megaraid_sas.h index 2c9d1b796475..611871ef15b5 100644 --- a/drivers/scsi/megaraid/megaraid_sas.h +++ b/drivers/scsi/megaraid/megaraid_sas.h @@ -18,6 +18,8 @@ #ifndef LSI_MEGARAID_SAS_H #define LSI_MEGARAID_SAS_H +#include <scsi/scsi_cmnd.h> + /* * MegaRAID SAS Driver meta data */ @@ -2594,6 +2596,16 @@ struct megasas_cmd { }; }; +struct megasas_cmd_priv { + void *cmd_priv; + u8 status; +}; + +static inline struct megasas_cmd_priv *megasas_priv(struct scsi_cmnd *cmd) +{ + return scsi_cmd_priv(cmd); +} + #define MAX_MGMT_ADAPTERS 1024 #define MAX_IOCTL_SGE 16 diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c index 82e1e24257bc..8bf72dbc33b7 100644 --- a/drivers/scsi/megaraid/megaraid_sas_base.c +++ b/drivers/scsi/megaraid/megaraid_sas_base.c @@ -1760,7 +1760,7 @@ megasas_build_and_issue_cmd(struct megasas_instance *instance, goto out_return_cmd; cmd->scmd = scmd; - scmd->SCp.ptr = (char *)cmd; + megasas_priv(scmd)->cmd_priv = cmd; /* * Issue the command to the FW @@ -2992,11 +2992,10 @@ megasas_dump_reg_set(void __iomem *reg_set) void megasas_dump_fusion_io(struct scsi_cmnd *scmd) { - struct megasas_cmd_fusion *cmd; + struct megasas_cmd_fusion *cmd = megasas_priv(scmd)->cmd_priv; union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; struct megasas_instance *instance; - cmd = (struct megasas_cmd_fusion *)scmd->SCp.ptr; instance = (struct megasas_instance *)scmd->device->host->hostdata; scmd_printk(KERN_INFO, scmd, @@ -3518,6 +3517,7 @@ static struct scsi_host_template megasas_template = { .mq_poll = megasas_blk_mq_poll, .change_queue_depth = scsi_change_queue_depth, .max_segment_size = 0xffffffff, + .cmd_size = sizeof(struct megasas_cmd_priv), }; /** @@ -3601,7 +3601,7 @@ megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd, cmd->retry_for_fw_reset = 0; if (cmd->scmd) - cmd->scmd->SCp.ptr = NULL; + megasas_priv(cmd->scmd)->cmd_priv = NULL; switch (hdr->cmd) { case MFI_CMD_INVALID: diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c b/drivers/scsi/megaraid/megaraid_sas_fusion.c index fc90a0a687b5..c72364864bf4 100644 --- a/drivers/scsi/megaraid/megaraid_sas_fusion.c +++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c @@ -2915,7 +2915,7 @@ megasas_build_ldio_fusion(struct megasas_instance *instance, get_updated_dev_handle(instance, &fusion->load_balance_info[device_id], &io_info, local_map_ptr); - scp->SCp.Status |= MEGASAS_LOAD_BALANCE_FLAG; + megasas_priv(scp)->status |= MEGASAS_LOAD_BALANCE_FLAG; cmd->pd_r1_lb = io_info.pd_after_lb; if (instance->adapter_type >= VENTURA_SERIES) rctx_g35->span_arm = io_info.span_arm; @@ -2923,7 +2923,7 @@ megasas_build_ldio_fusion(struct megasas_instance *instance, rctx->span_arm = io_info.span_arm; } else - scp->SCp.Status &= ~MEGASAS_LOAD_BALANCE_FLAG; + megasas_priv(scp)->status &= ~MEGASAS_LOAD_BALANCE_FLAG; if (instance->adapter_type >= VENTURA_SERIES) cmd->r1_alt_dev_handle = io_info.r1_alt_dev_handle; @@ -3293,7 +3293,7 @@ megasas_build_io_fusion(struct megasas_instance *instance, io_request->SenseBufferLength = SCSI_SENSE_BUFFERSIZE; cmd->scmd = scp; - scp->SCp.ptr = (char *)cmd; + megasas_priv(scp)->cmd_priv = cmd; return 0; } @@ -3489,7 +3489,7 @@ megasas_complete_r1_command(struct megasas_instance *instance, if (instance->ldio_threshold && megasas_cmd_type(scmd_local) == READ_WRITE_LDIO) atomic_dec(&instance->ldio_outstanding); - scmd_local->SCp.ptr = NULL; + megasas_priv(scmd_local)->cmd_priv = NULL; megasas_return_cmd_fusion(instance, cmd); scsi_dma_unmap(scmd_local); megasas_sdev_busy_dec(instance, scmd_local); @@ -3613,12 +3613,13 @@ complete_cmd_fusion(struct megasas_instance *instance, u32 MSIxIndex, case MPI2_FUNCTION_SCSI_IO_REQUEST: /*Fast Path IO.*/ /* Update load balancing info */ if (fusion->load_balance_info && - (cmd_fusion->scmd->SCp.Status & + (megasas_priv(cmd_fusion->scmd)->status & MEGASAS_LOAD_BALANCE_FLAG)) { device_id = MEGASAS_DEV_INDEX(scmd_local); lbinfo = &fusion->load_balance_info[device_id]; atomic_dec(&lbinfo->scsi_pending_cmds[cmd_fusion->pd_r1_lb]); - cmd_fusion->scmd->SCp.Status &= ~MEGASAS_LOAD_BALANCE_FLAG; + megasas_priv(cmd_fusion->scmd)->status &= + ~MEGASAS_LOAD_BALANCE_FLAG; } fallthrough; /* and complete IO */ case MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST: /* LD-IO Path */ @@ -3630,7 +3631,7 @@ complete_cmd_fusion(struct megasas_instance *instance, u32 MSIxIndex, if (instance->ldio_threshold && (megasas_cmd_type(scmd_local) == READ_WRITE_LDIO)) atomic_dec(&instance->ldio_outstanding); - scmd_local->SCp.ptr = NULL; + megasas_priv(scmd_local)->cmd_priv = NULL; megasas_return_cmd_fusion(instance, cmd_fusion); scsi_dma_unmap(scmd_local); megasas_sdev_busy_dec(instance, scmd_local);